... mint condition midwest vehicle here.
That frame and diff housing look pretty good. Moderate surface rust. Paint it with POR15 or equivalent or coat it with NHOU, Fluid Film or similar. Dorman makes a weld on diff cover now. I've done a bunch, usually takes about 3 hours.
Not ideal but doesn't look like a deal breaker. Would definitely need to be addressed extensively and ASAP, but should be salvageable. As said I don't think you'll find THAT much better in Penn. - remember you guys are no. 2 in the country for road salt usage (only slightly behind Rhode Island if I remember correctly) so chances of finding something totally clean is next to impossible.
I like how one of the best parts on the diff is clearly where gear oil has dripped before lmao, very typical
I'm looking at a Pennsylvania '99 T4R limited.